Cirrus-logic AN403 Bedienungsanleitung PDF herunterladen

Cirrus Logic, Inc.

http://www.cirrus.com

3/14/13UPDATED FOR DIMMER COMPATIBILITYA1

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CRD1616-7W-28V

AN403

Design Example of CS1616

for 7W Dimmer-Compatible SSL Circuit

Features

• Supports Cirrus Logic CS1616

• Quasi-resonant FlybackTopology with Constant-

current Output

• Flicker-free Dimming

• Line Voltage: 207VAC - 253VAC

• Rated Input Power: 7W

• Rated Output Power: 5W

• Efficiency: ~82% at 175mA for 9xLEDs in Series

• Low Component Count

General Description

This application note provides an example of a Solid State

Lighting (SSL) LED lamp circuit designed using Cirrus

Logic’s CS1616, the CRD1616-7W-28V. The CRD1616-

7W-28V reference design demonstrates the performance

of the CS1616 resonant mode AC/DC LED driver IC with a

175mA output driving

9xLEDs in series

. It offers best-in-

class dimmer compatibility and minimum dimming

performance with leading-edge, trailing-edge, and digital

dimmers. The form factor is targeted to fit into many LED

bulb applications (A19-type, PAR).

AUG‘14

AN403

1 2 3 4 5 6 ... 14 15

Inhaltsverzeichnis

Seite 1 - Design Example of CS1616

Seite 2 - Risk of Electric Shock

AN403105. THERMAL IMAGINGFigure 6. Top ThermalFigure 7. Bottom Thermal

Seite 3 - 1. INTRODUCTION

AN403116. DIMMER COMPATIBILITYLamp with a CS1616 (230V/50Hz)Date 3/15/2013 Power Factor1,40.926Vendor Cirrus Logic EN55015 Compliant (Y/N) NInput Volt

Seite 4 - 2. SCHEMATIC

AN403121. Tested at nominal input voltage, nominal input frequency and without a dimmer after soaking for 15 minutes2. Average3. Peak-to-peak4. Measur

Seite 5 - 3. BILL OF MATERIALS

AN403137. PERFORMANCE PLOTS 0.1650.1670.1690.1710.1730.1750.1770.1790.1810.1830.185207 214 222 230 238 246 253Output Current (A) Line Voltage (V) Figu

Seite 6 - 4. BOARD LAYOUT

AN40314 0.80.820.840.860.880.90.920.940.960.981207 214 222 230 238 246 253Power Factor Line Voltage (V) Figure 10. Power Factor vs. Line VoltageFigur

Seite 7 - Figure 3. Bottom Silkscreen

AN403158. REVISION HISTORYRevision Date ChangesRD1 AUG 2014 Preliminary release

Seite 8 - Figure 4. Top Routing

AN4032Contacting Cirrus Logic SupportFor all product questions and inquiries contact a Cirrus Logic Sales Representative. To find the one nearest to y

Seite 9 - Figure 5. Bottom Routing

AN40331. INTRODUCTIONThe CS1616 is a 230VAC quasi-resonant flyback mode dimmable LED controller IC. The CS1616 uses a digital con-trol algorithm that

Seite 10 - 5. THERMAL IMAGING

AN40342. SCHEMATICFigure 1. Schematic3/14/13UPDATED FOR DIMMER COMPATIBILITYA1REV DESCRIPTION DATE12D6SD103BWS-TP5515K-t17&100K(LINE(NEUTRA

Seite 11 - 6. DIMMER COMPATIBILITY

AN40353. BILL OF MATERIALS Table 1: Bill of Materials

Seite 12

AN40364. BOARD LAYOUTFigure 2. Top Silkscreen

Seite 13 - 7. PERFORMANCE PLOTS

AN4037Figure 3. Bottom Silkscreen

Seite 14 - Output Current (A)

AN4038Figure 4. Top Routing